280785052 has 6 divisors (see below), whose sum is σ = 491373848. Its totient is φ = 140392524.

The previous prime is 280785019. The next prime is 280785053. The reversal of 280785052 is 250587082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280785053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35098128 + ... + 35098135.

Almost surely, 2^280785052 is an apocalyptic number.

It is an amenable number.

280785052 is a deficient number, since it is larger than the sum of its proper divisors (210588796).

280785052 is a wasteful number, since it uses less digits than its factorization.

280785052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70196267 (or 70196265 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 280785052 is about 16756.6420263727. The cubic root of 280785052 is about 654.8241098721.

The spelling of 280785052 in words is "two hundred eighty million, seven hundred eighty-five thousand, fifty-two".